California ICC UST Service Technician Practice Exam

What is the function of a liquid collection point in a UST system?

1. Collect vapors

2. Collect gasoline without obstructing the vapor pipe pathway

3. Regulate temperature

4. Measure tank pressure

The correct answer is: Collect gasoline without obstructing the vapor pipe pathway

The function of a liquid collection point in an underground storage tank (UST) system is to collect gasoline or other liquid products without obstructing the vapor pipe pathway. This is crucial for the proper functioning of the UST system because it allows for the safe and efficient retrieval of liquid while maintaining the integrity of the vapor recovery system, which is designed to minimize emissions of hazardous vapors during the transfer of liquids. In UST operations, the liquid collection point facilitates the collection of free product, ensuring it can be drawn off without interfering with the vapor control mechanisms that help prevent the release of volatile organic compounds (VOCs) into the atmosphere. This design enhances the safety and environmental compliance of the UST system. The other options, such as collecting vapors, regulating temperature, and measuring tank pressure, do not accurately describe the primary function of a liquid collection point. Collecting vapors is typically associated with separate vapor recovery components, while temperature regulation and pressure measurement pertain to different aspects of UST management. Hence, the accurate understanding of the liquid collection point's function is critical for anyone working with UST systems.